x = int(input())
mod = 10**9 + 7

# Precompute factorial mod mod
fact = 1
for i in range(2, x + 1):
    fact = (fact * i) % mod

# The result is (-1) * (x! // 2)
# Since we are working modulo mod, division by 2 is multiplication by the modular inverse of 2
inv2 = pow(2, mod - 2, mod)
result = (-fact) % mod
result = (result * inv2) % mod

print(result)